The American Mint - The American Spirit Remembering 9/11 Archival Anniversary Coin is a commemorative coin struck in modern silver and clad. It is uncirculated and features a proof strike type. Minted at American Mint in the United States, this coin honors the American spirit and the historical significance of September 11th. This Uncertified coin is a tribute to the resilience and strength of the American people in the face of adversity.